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Mimick vs PhotoSync: catalog facts
Mimick	PhotoSync
Free Free and open source under the GPL-3.0 licence.	Freemium The desktop Companion tool is free; the mobile apps offer paid features.
Linux	Windows, macOS, Linux, Android, iOS
Background folder sync to Immich with an offline queue Native GTK4 and libadwaita interface	Transfers in full resolution with metadata intact Works over local Wi-Fi without a cloud
Requires your own Immich server Linux only	Closed source Pricing of the mobile apps not clearly stated on the homepage
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.